Yaskawa YASNAC PC NC Maintenance Manual - Manual (Page 185)

Chapter 6: Module/Unit Replacement PC NC Maintenance Manual
6-3
hard disk drive assembly cover by loosening the four mounting
lock nuts.
4. Loosen the four top/bottom-mounting screws from the hard disk
drive assembly mounting plate and remove the hard disk drive
assembly.
Install a hard disk drive unit by following the steps below.
1. Install the new hard disk drive assembly and tighten the four top/
bottom-mounting screws.
2. Attach the hard disk drive assembly cover and tighten the four
mounting lock nuts.
3. Attach the door to the CPU rack by inserting the side-pins into the
door hinges.
4. Plug hard disk drive data (HD DATA) and power (HD PWR)
cables into their original locations.
5. Close the door and tighten the top/bottom thumbscrews.
6. Return the power supply switch of the CPU rack to the “I” posi-
tion and power up to restart the control unit.
7. Change the Windows NT serial number.
8. Follow the HD data set-up procedures.
Following replacement of the hard disk drive, verify functions as follows.
1. Verify that the hard disk drive unit type is displayed correctly on
the BIOS screen at boot-up.
2. Verify that Windows NT boots up correctly.
3. Verify that the NC operates normally after the SERVO ON switch
is pressed and that no alarms show on the MMI screen.